> Would it not be possible with your scheme to package a closed source> driver in an open source wrapper driver and then defeat your tainting> technique.

It would also be theoretically possible for an evil driver merchantto twiddle the flag back via /dev/kmem (for instance). Or load themodule by manipulation of /dev/kmem. Or for the bug-reporting userto patch their kernel so that the flag never got set and hencedisguise the presence of an nvidia driver (etc.) in a misguidedattempt to wangle support out of Alan et al.

However, I understood the point of the exercize to be a first passhueristic to flag bug reports from systems running modules forwhich Alan and others haven't got, and can't get the source. It'snot going to be perfect (see above), but equally doesn't need to be.I'm sure users do all sorts of other 'well don't do that, then'stuff which wastes the time of those reading bug reports.